Oddly, your URL now points to an incomplete file, but I downloaded the complete
version a few days ago.
There seem to be two or three problems with the fix:
- the reference to "build_Dir" should be "build_dir"
- there seemed to be incorrect indentation, I think on the line that starts
"except OSError"
- I am guessing that "except OSError, (errno, msg)" should be "except OSError,
(err, msg)"
After I fixed the first two listed above, the new livecd-creator worked correctly.
steve

livecd-tools-013.1-1.fc8 has been pushed to the Fedora 8 testing repository. If problems still persist, please make note of it in this bug report.
If you want to test the update, you can install it with
su -c 'yum --enablerepo=updates-testing update livecd-tools'. You can provide feedback for this update here: http://admin.fedoraproject.org/updates/F8/FEDORA-2008-5423